每个建筑都是一个原型；没有两个是完全相同的。
Every building is a prototype; no two are exactly alike.
The great powers are always searching for opportunities to gain power at the expense of rivals, and to dominate the system.
The invention of the cotton gin was the result of necessity and observation.
In business, as in quarrying, precision and patience yield the best results.
Sustainability must be at the core of every chemical company’s strategy—it’s no longer optional.
艺术是希望的最高形式。